This calculator will tell you the minimum required sample size for a multiple regression study, given the desired probability level, the number of predictors in the model, the anticipated effect size, and the desired statistical power level. ...
This calculator will compute the sample size required for a study that uses a structural equation model (SEM), given the number of observed and latent variables in the model, the anticipated effect size, and the desired probability and statistical power levels. The calculator will return both the...
Campbell MK, Thomson S, Ramsay CR, MacLennan GS, Grimshaw JM: Sample size calculator for cluster randomized trials. Comput Biol Med. 2004, 34: 113-25. 10.1016/S0010-4825(03)00039-8. Article PubMed Google Scholar Gulliford MC, Adams G, Ukoumunne OC, Latinovic R, Chinn S, Campbell ...
Calculator References Related Calculators Formulas: A-priori Sample Size for Student t-Tests Free Statistics Calculators: Home > Formulas: A-priori Sample Size for Student t-TestsA-priori Sample Size for Student t-Tests Formulas Below you will find descriptions and details for the 7 formulas th...
Below you will find a complete set of details for 3 different references / citations that are related to the computation of a-priori sample size values for a t-test.Reference for Citing the Online Calculator Soper, D.S. (2025). A-priori Sample Size Calculator for Student t-Tests [Softw...
This calculator will tell you the minimum sample size required for a hierarchical multiple regression analysis; i.e., the minimum sample size required for a significance test of the addition of a set of independent variables B to the model, over and abov